Sheet-metal window-sill.



W. GORBETT. SHEET METAL WINDOW BILL.

APPLICATION FILED rnn 14 190B Patented Dec. 29, 1908.

2 SHEETS-SHEET 1.

m V EDITOR W. 008.85"

W. GORBETT.

SHEET METAL WINDOW SILL. APPLICATION FILED PEB.14 1908.

907 ,747, r v Patented Dec. 29, 1908.

2 SHEETS-SHEET 2.

WI'I'NESSES. INVENTOR 'W'. CORBETT- Maw WILLIAM CORBETT, OF SMITHS FALLS, ONTARIO, CANADA.

SHEET-METAL WINDOW-SILL.

Specification of Letters Patent.

Application filed February 14, 1908. Serial No. 415,980.

Tocll whom it may concern:

Beit known that I, WILLIAM CORBETT, of the town of Smiths Falls,.in the county of Lanark, Province of Ontario, Dominion of Canada, have invented certain new and useful Improvements in Sheet-Metal Window- Sills, of which the tion. I

My invention relates to improvements in sheet metal window sills, and the objects of my invention are to provide means within the sill for at once gaging the inclination of the top bed or wash and reinforcing the sill, further objects being to provide means for preventin the water dripping off the sill and defacing t e wall of the building and also to provide means to prevent the entrance of water and wind between the window frame and the metal sill, thereby increasing the warmth of the house to an even greater degree than the ordinary stone sill. These obects are accomplished in the first place by a metallic gage reinforcing bar fitting inside at each end of the metal sill and bedded in the sill, thereby rigidly su porting the sill in position; in the. secon place, by V-shaped notches formed on each returned end of the sill; and in the third place by an upwardly turned weather strip on the back of the window sill adapted to fit in a groove provided in the window frame. I

The improvements are described in detail in the accompanying specification and illustrated in the drawings.

In the drawings,Figure 1 is a erspective view of my improved metallic sill. Fig. 2 is a vertical section through the same taken substantially through the center of the window frame. Fig. 3 is a similar section taken through the sill immediately adjacent to the daylight or window opening. Fig. 4 is-a perspective view of the gage angle bar. Fig. 5 is a plan view of the underside of an alternative form of sill. Fig. 6 is a plan of the blank from which the form shown in Figs. 1 to 3 is constructed. Fig. 7 is a plan view of the blank from which the form shown in Fig. 4 is constructed. Fig. 8 is an elevation of the sill in position on the wall.

In the drawings like letters of reference indicate corresponding Referring to the rawings, A is the sill formed of sheet metal and comprising a bed a having a slight inclination to form the wash and being adapted to rest on the wall of the building, and an upwardly protruding arts in each figure.

hollow central following is a specifica l into the frame B upwardly turned flange f provided Patented Dec. 29, 1908.

portion 1) integral therewith. of the bed preferably has 9. turned up to form a weather groove The outer face (3 of the central portion 1) has an at the bottom, the juncture forming a sharp edge g serving as an eflicient water drip. At each end of the face 6, inwardly turned flanges h and i are provided adapted to form the sides of the sill. The bottom portions 9' of these side portions are turned upwardly and at the 'line of bending V-shaped notches k are provided adapted, when the portion 7' is bent up, to guide the water away from the wall and cause it .to drip out of contact therewith.

In the preferred form,

the portions y' are provided with flanges Z which are folded over the flange f to give greater rigidity to the sill.

'lhe top bed of the sill is also preferably provided with ears'm which portions and are On the interior of rality of metallic fold over the side preferably riveted thereto. the sill are provided a plugage bars C adapted to serve as a templet to gage the inclination of the wash and thickness'of the sill and also to serve as reinforcing bars to strengthen the sill. In theirs eciiic construction, gage bars have t these eir lower edges p beveled and adapted to fit between the face e and flange f and have their upper ends 9 also beveled and adapted to be engaged by tongues T which are out out of the bed of the sill and bent downwardly to engage the underside of the said upper end.

'lhese bars are preferably located at the end of the sill and in ositioning the latter, the brick or stone wa l is built over the gage bar thereby holding the gage bar rigidly in position, and this in turn gives rigidity to the sill. as many It is evident that of these gage bars as desired may be employed, but I have found that one at each on is quite suflicient for an ordinary sill.

The

in the sill prior to leaving the factory gage bars will usually have been inserted and to place it in position the brick wall is built about to the level of the top of the sill sill is bedded in the usual way, resting on the brick stretchers The the gage bars at each end,

and the wall at each side of the sill being built above them, as shown in Fig. 8.

If desired, and as shown in the drawing, the top row of flat brick headers may be projected outwardly to form a ledge s and thus strength to the breast of the sill.

giving In placing the window frame in position, the rest (1 t erein is fitted over the weather strip which latter will prevent any entrance of water along the joint between the sill and the frame and sill also serve to prevent any draft ordinarily created through the shrinkage of the frame. The acute edge 9 carries any water drip away from the side of the wall while the notches lc prevent the ends of the sill dri ping water on the face of the wall.

In t e form shown in Figs. 5 and 7, the flange f is shortened so that its edge t will, in position, be some distance from the face of the sill, and the overlapping flanges Z are omitted. This form is useful where the face of the wall is rough in character rendering it difficult to fit the edge of the sill close to it. It may be observed that the blank for this sec- 0nd form of sill may be very easily stam ed by the same dies as employed for the ot er form, as the only change is the omission of a strip of metal at the edge, and if the blanks shown in Fig. 6 were out along the dotted lines it it would form the blank of Fig. 7. 'I he dotted lines o in the blank indicate the osition of the acute edge g and the dotted ines w indicate the line of fold for turning up the weather strip.

The sill with its im rovements is especially ada ted for iron Win ow frames where a protru ing window sill is required as the upwardly turned weather strip in the sill can be easily arranged to fit and to be riveted to the bottom of the iron window frame. The sheet metal for the construction of m sill is preferably stamped from galvanize steel, gage Nos. 20 to 26.

The indestructibility and other advantages of this class of sill is well known'and will not be further described herein.

While the invention has been described herein with great particularity of detail yet it will be readily understood that in ca'rrying out the same changes within the scope of the appended claims may be made without departing from the spirit of the invention.

What I claim as my invention is:

1. In a window sill the combination with a hollow sheet metal sill, comprising a suitable bed, a front portion, and bottom portion, of side portions having their ends bent inwardly to engage the bottom portion and having V-shaped notches cut in their edges at the bending line, whereby the dripping edge will be removed outwardly from the face of the building as and for the purpose specified.

2. The combination with the bed portion, and face having a bottom flange bent inwardly and upwardly, and inwardly bent side ortions, all formed of a single sheet of meta, of extensions on the inwardly bent side portions, the said extensions being bent inwardly and upwardly and folded over the bottom flange on the face.

3. The combination with a hollow sheet metal window sill having an upwardly turned flange at the bottom thereof forming an acute angle'with the face of the sill, of an L-shaped reinforcing and gage bar located "within the sill havin the lower extremity enlargedin width an beveled to fit between 1 the face and the inclined flange at the bot- 'tomithereof.

In witness whereof I have hereunto set my hand in the presence of two witnesses.

' WILLIAM CORBETT. Witnesses:

Russian .8. SMART, WM. A. W zmN. 

